Create a sample on how to send audit messages using a different transport

[SzymonPobiega]

Some transports used in Azure, i.e. Azure Service Bus (premium) and SQL Server, incur very significant per-message costs. Enabling the audit feature effectively doubles the number of messages that need to be pushed by the system. That makes out Platform non cost-effective.

To mitigate that problem, audit messages can be sent to ServiceControl audit instance using a lower cost channel, e.g. Azure Storage Queues.

Task

The task is to build a sample that contains pipeline behaviors and sending components required to send audit messages via Azure Storage Queues.

Limitations

Azure Storage Queues imposes limit on message size. In the interest of time, the sample can make it explicit (via a warning) or, if time permits, contain logic that only offloads messages that fit in the size limit.